Cited by 305Plant Molecular Biology ResearchDevelopmental Biology and Gene RegulationLeaf Properties and Growth Measurement

The NAC-domain transcription factor GOBLET specifies leaflet boundaries in compound tomato leaves

Berger, Yael, Harpaz-Saad, Smadar, Brand, Arnon, Melnik, Hadas, Sirding, Neti, Alvarez, John Paul, Zinder, Michael, Samach, Alon +2 more·2009·Development

Abstract

Leaves are formed at the flanks of the shoot apical meristem (SAM) and develop into a variety of forms. In tomato, prolonged leaf patterning enables the elaboration of compound leaves by reiterative initiation of leaflets with lobed margins. In goblet (gob) loss-of-function mutants, primary leaflets are often fused, secondary leaflets and marginal serrations are absent, and SAMs often terminate precociously. We show that GOB encodes a NAC-domain transcription factor expressed in narrow stripes at the leaf margins, flanking the distal side of future leaflet primordia, and at the boundaries between the SAM and leaf primordia. Leaf-specific overexpression of the microRNA miR164, a negative regulator of GOB-like genes, also leads to loss of secondary-leaflet initiation and to smooth leaflet margins. Plants carrying a dominant gob allele with an intact ORF but disrupted miR164 binding site produce more cotyledons and floral organs, have split SAMs and, surprisingly, simpler leaves. Overexpression of a form of GOB with an altered miR164 binding site in leaf primordia leads to delayed leaflet maturation, frequent, improperly timed and spaced initiation events, and a simple mature leaflet form owing to secondary-leaflet fusion. miR164 also affects leaflet separation in Cardamine hirsuta, a Brassicaceae species with complex leaves. Genetic and molecular analyses suggest that GOB expression is intact in the simplified leaves of entire tomato mutants, which have a defect in a putative r…

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Crossref · 10.1242/dev.031625

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  • In several compound-leaf species, CUC/GOB orthologous genes are expressed in the boundary of leaflets and down-regulation of their expression results in simplification of leaf architecture.

    “In several compound-leaf species, CUC/GOB orthologous genes are expressed in the boundary of leaflets and down-regulation of their expression results in simplification of leaf architecture (Blein et al., 2008;Berger et al., 2009;Cheng et al., 2012; Fig. 2d).”
  • CUC/GOB genes restrict growth in the boundary zones between initiating leaflets and promote the development of separated units in a complex leaf.

    “Similar to their activity at the margin of Arabidopsis leaves, CUC/GOB genes restrict growth in the boundary zones between initiating leaflets and promote, thereby, the development of separated units in a complex leaf.”
  • NAM/CUC3 gene expression in the distal leaflet boundary is evolutionarily conserved in many compound leaved species, such as Aquilegia caerulea, S. tuberosum, C. hirsuta, P. sativum and C. pratensis.

    “NAM/ CUC3 gene expression in the distal leaflet boundary is evolutionarily conserved in many compound leaved species, such as Aquilegia caerulea, S. tuberosum, C. hirsuta, P. sativum and C. pratensis (Blein et al., 2008;Berger et al., 2009;Rossmann et al., 2015).”
  • CUC1-3 is expressed in the boundary between the SAM and lateral organs (cotyledons, leaves, floral organs), leaflet and rachis, and emerging teeth of simple leaves.

    “| CUC1-3 | Gob (tomato (Solanum | NAC | Fusions of various organs, | SAM and lateral organs | Souer et al. (1996); Aida et al. |”

    From <i>Divide et impera</i>: boundaries shape the plant body and initiate new meristems (2016) · cites this paper as Berger et al. (2009)

  • Loss-of-function mutants of CUC1-3 have simpler leaves in compound-leaf species.

    “| | lycopersicum)), CUP | | simpler leaves in compound- | (cotyledons, leaves, floral | (1997); Takada et al. (2001); |”

    From <i>Divide et impera</i>: boundaries shape the plant body and initiate new meristems (2016) · cites this paper as Berger et al. (2009)

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Authors
Berger, Y., Harpaz-Saad, S., Brand, A., Melnik, H., Sirding, N., Alvarez, J. P., Zinder, M., Samach, A., Eshed, Y., & Ori, N.
Affiliations
  • Hebrew University of Jerusalem (IL)
  • The Robert H. Smith Institute of Plant Sciences and Genetics in Agriculture and The Otto Warburg Minerva Center for Agricultural Biotechnology, Faculty of Agriculture, Hebrew University of Jerusalem, P.O. Box 12, Rehovot 76100,Israel.
  • Weizmann Institute of Science (IL)
Corresponding author
Ori, Naomi
Venue
Development
Published
2009-03-01
Volume
136
Issue
5
Pages
823-832
ISSN
  • 0950-1991 (ISSN-L)
  • 1477-9129
OpenAlex
W2029073522
Cited by
305
References
55
Citations by year
2026: 8 · 2025: 18 · 2024: 7 · 2023: 22 · 2022: 12 · 2021: 10 · 2020: 19 · 2019: 18 · 2018: 17 · 2017: 20 · 2016: 17 · 2015: 19 · 2014: 21 · 2013: 15 · 2012: 26
FWCI
33.19
Type
journal article
Language
en
Open access
closed
Locations
  • Development (publishedVersion)
  • PubMed (publishedVersion)
Topics
  • Life Sciences › Agricultural and Biological Sciences › Plant Science › Plant Molecular Biology Research
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Developmental Biology and Gene Regulation
  • Life Sciences › Agricultural and Biological Sciences › Plant Science › Leaf Properties and Growth Measurement
Keywords
goblet, NAC transcription factors, compound leaf development, tomato, shoot apical meristem, miR164, Cardamine hirsuta, auxin response, leaf patterning, microRNA target binding
MeSH terms
Base Sequence, Models, Biological, Mutation, Phenotype, Plant Proteins, Transcription Factors, Genes, Plant, DNA Primers, Gene Expression Regulation, Plant, Gene Expression Regulation, Developmental, Plant Leaves, Meristem, Solanum lycopersicum, RNA, Plant, Body Patterning, Plants, Genetically Modified, MicroRNAs

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